Radio blackout — G4 (Kp8) storm
Drop in 30m (10 MHz) FT8 traffic during the G4 major geomagnetic storm of 10–11 October 2024, as monitored in Telford.
10.136 MHz USB
Telford
Drop in 30m (10 MHz) FT8 traffic during the G4 major geomagnetic storm of 10–11 October 2024, as monitored in Telford.
Drop in 30m FT8 traffic during the G5 extreme geomagnetic storm of 10–11 May 2024.
Effect on 30m FT8 SNR of an HF radio blackout caused by an M-class solar flare.